feat: add support for davinci-002 and babbage-002

common/model-ratio.go

@@ -32,6 +32,8 @@ var ModelRatio = map[string]float64{
 	"gpt-3.5-turbo-16k-0613":    1.5,
 	"gpt-3.5-turbo-instruct":    0.75, // $0.0015 / 1K tokens
 	"gpt-3.5-turbo-1106":        0.5,  // $0.001 / 1K tokens
+	"babbage-002":               0.2,  // $0.0004 / 1K tokens
+	"davinci-002":               1,    // $0.002 / 1K tokens
 	"text-ada-001":              0.2,
 	"text-babbage-001":          0.25,
 	"text-curie-001":            1,